vercel ms up to 1.x index.js parse str redos

CVSS Meta Temp Score
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CTI Interest Score
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4.5$0-$5k0.00

Summaryinfo

A vulnerability has been found in vercel ms up to 1.x and classified as problematic. This vulnerability affects the function parse of the file index.js. The manipulation of the argument str leads to redos. This vulnerability is documented as CVE-2017-20162. The attack can be initiated remotely. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in vercel ms up to 1.x. This issue affects the function parse of the file index.js. The manipulation of the argument str with an unknown input leads to a redos vulnerability. Using CWE to declare the problem leads to CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. Impacted is availability.

The weakness was released 01/05/2023 as 89. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2017-20162. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1449.003 according to MITRE ATT&CK.

The exploit is available at github.com. It is declared as proof-of-concept.

Upgrading to version 2.0.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch caae2988ba2a37765d055c4eee63d383320ee662 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. The advisory contains the following remark:

Limit str to 100 to avoid ReDoS of 0.3s (#89)

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.6
VulDB Meta Temp Score: 4.5

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 4.3
CNA Vector (VulDB): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: ms 2.0.0
Patch: caae2988ba2a37765d055c4eee63d383320ee662

Timelineinfo

01/05/2023 🔍
01/05/2023 +0 days 🔍
01/05/2023 +0 days 🔍
11/05/2025 +1035 days 🔍

Sourcesinfo

Product: github.com

Advisory: 89
Status: Confirmed

CVE: CVE-2017-20162 (🔍)
GCVE (CVE): GCVE-0-2017-20162
GCVE (VulDB): GCVE-100-217451
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/05/2023 12:54
Updated: 11/05/2025 14:20
Changes: 01/05/2023 12:54 (49), 01/28/2023 16:05 (2), 01/28/2023 16:13 (28), 11/05/2025 14:20 (24)
Complete: 🔍
Cache ID: 216::103

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